Production and Photosynthetic Indicators of Maize Hybrids (Zea mays L.) Under Drought Conditions in a Semi-Arid Region

IF 3.9 3区 生物学 Q1 PLANT SCIENCES
Linda Citlalli Noperi-Mosqueda, Alan Alvarez-Holguin, Jesus Manuel Ochoa-Rivero, Federico Villareal-Guerrero, Osías Ruiz-Álvarez, Pablo Delgado-Sánchez, Eloy Navarro-León, Omar Castor Ponce-García
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Abstract

Drought is one of the main constraints affecting crop production in the current climate change scenario. The desert area of Chihuahua in Mexico has limited water availability and is therefore susceptible to drought. Plant photosynthetic performance is the main determining factor of crop productivity, especially under stress conditions. The present study aimed to conduct a comparative analysis of three maize hybrids (P1898, P1445, and P1382) grown under drought stress, focusing on yield, physiological aspects, photosynthetic efficiency, and stomatal activity. A field experiment with these hybrids was carried out in the municipality of Cuauhtémoc, Chihuahua, Mexico, which is characterized by a low precipitation regime. The results indicated that the P1898 hybrid achieved the highest yield and was the best adapted to drought conditions. The analysis of photosynthesis parameters suggests favorable adaptations in both the P1898 and P1382 hybrids such as excess energy dissipation. Additionally, the P1898 hybrid exhibited a greater stomatal area, potentially enhancing CO2 uptake and heat dissipation via transpiration. The P1382 hybrid demonstrated greater efficiency in photosynthetic energy use and improved water use efficiency (WUE), likely due to its stomatal adaptations. These findings suggest that the P1898 hybrid is the most suitable maize cultivar for cultivation in regions prone to drought and high temperatures, owing to its superior yield and photosynthetic adaptations.

Abstract Image

半干旱地区干旱条件下玉米杂交种(Zea mays L.)的产量和光合指标
在当前气候变化的情况下,干旱是影响作物生产的主要制约因素之一。墨西哥奇瓦瓦的沙漠地区水源有限,因此很容易受到干旱的影响。植物的光合作用是决定作物产量的主要因素,尤其是在胁迫条件下。本研究旨在对在干旱胁迫条件下生长的三种玉米杂交种(P1898、P1445 和 P1382)进行比较分析,重点关注产量、生理方面、光合效率和气孔活动。这些杂交种的田间试验是在墨西哥奇瓦瓦州 Cuauhtémoc 市进行的,该地区降水量较少。结果表明,P1898 杂交种产量最高,对干旱条件的适应性最好。对光合作用参数的分析表明,P1898 和 P1382 杂交种都具有良好的适应性,如多余的能量耗散。此外,P1898 杂交种的气孔面积更大,有可能通过蒸腾作用提高二氧化碳吸收和散热能力。P1382 杂交种表现出更高的光合能量利用效率和更高的水分利用效率(WUE),这可能是由于其气孔适应性。这些研究结果表明,P1898 杂交种因其优异的产量和光合适应性,是最适合在干旱和高温地区种植的玉米品种。
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来源期刊
CiteScore
8.40
自引率
6.20%
发文量
312
审稿时长
1.8 months
期刊介绍: The Journal of Plant Growth Regulation is an international publication featuring original articles on all aspects of plant growth and development. We welcome manuscripts reporting question-based research on various aspects of plant growth and development using hormonal, physiological, environmental, genetic, biophysical, developmental and/or molecular approaches. The journal also publishes timely reviews on highly relevant areas and/or studies in plant growth and development, including interdisciplinary work with an emphasis on plant growth, plant hormones and plant pathology or abiotic stress. In addition, the journal features occasional thematic issues with special guest editors, as well as brief communications describing novel techniques and meeting reports. The journal is unlikely to accept manuscripts that are purely descriptive in nature or reports work with simple tissue culture without attempting to investigate the underlying mechanisms of plant growth regulation, those that focus exclusively on microbial communities, or deal with the (elicitation by plant hormones of) synthesis of secondary metabolites.
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